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DK8X Motherboard
RECOMMENDED MEMORY CONFIGURATIONS
The AMD Opteron processors have very specific memory module requirements, and due
to the design of the Mainboard, there are certain configurations of memory that work best
to make the most effective use of the memory bandwidth.
The AMD Opteron features 128-bit DDR memory channels. DDR Memory Modules are
only 64-bit. In order to benefit from the full bandwidth, you should always install the
DIMMs in pairs. The Mainboard is designed to pair up DIMM slots A0/B0, A1/B1,
A2/B2 and slots A3/B3 for the 128-bit pathway.
The DIMM memory banks are shared over the dual CPU sockets. It is possible to operate
a system with two CPUs and only a pair of DIMMs in the memory bank.
The following is our recommended DIMM installation path based on the number of
DIMMS being installed (Remember to check that the DIMMS are 2.5V Registered ECC
DDR PC2100/ PC2700/PC3200 DDR266/ DDR333/DDR400 DIMMs)
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2-10 Hardware Installation